The Mechanist Priest and Priestess are high-ranking members of the Mechanist Order able to attack with magic. They both appear occasionally throughout Thief II: The Metal Age. Their spells conjure magical flaming gears which are powerful, but slow and relatively easy to dodge.

The Mechanist priest shares many similarities to the Hammerite Priests of TDP/TG, who launched white-hot hammers with the same properties.